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Submission #715220

# Submission time Handle Problem Language Result Execution time Memory
715220 2023-03-26T08:35:04 Z TheSahib Examination (JOI19_examination) C++17
0 / 100
 3000 ms 848712 KB 
#include <bits/stdc++.h>


#define ll long long
#define pii pair<int, int>

using namespace std;

const int TREE_SIZE = 1e5 * 30;
const int MAXVAL = (1 << 30) - 1;

struct SegTree1D{
    vector<int> tree, L, R;
    int nxt = 0;
    SegTree1D(){
        addNode();
    }
    int addNode(){
        tree.emplace_back(0);
        L.emplace_back(0);
        R.emplace_back(0);
        return nxt++;
    }
    void update(int node, int l, int r, int pos, int val){
        tree[node] += val;
        if(l == r) return;
        int mid = (l + r) / 2;
        if(pos <= mid){
            if(!L[node]) L[node] = addNode();
            update(L[node], l, mid, pos, val);
        }
        else{
            if(!R[node]) R[node] = addNode();
            update(R[node], mid + 1, r, pos, val);
        }
    }

    int ask(int node, int l, int r, int ql, int qr){
        if(r < ql || qr < l) return 0;
        if(ql <= l && r <= qr) return tree[node];
        
        int ans = 0;
        int mid = (l + r) / 2;
        if(L[node]) ans += ask(L[node], l, mid, ql, qr);
        if(R[node]) ans += ask(R[node], mid + 1, r, ql, qr);
        return ans;
    }
};

struct SegTree2D{
    SegTree1D tree[TREE_SIZE];
    int L[TREE_SIZE], R[TREE_SIZE];
    int nxt = 0;

    int addNode(){
        return nxt++;
    }

    SegTree2D(){
        addNode();
        memset(L, 0, sizeof(L));
        memset(R, 0, sizeof(R));
    }
    void update(int node, int l, int r, int ux, int uy, int val){
        tree[node].update(0, 0, MAXVAL, ux, val);
        if(l == r) return;
        int mid = (l + r) / 2;
        if(uy <= mid){
            if(!L[node]) L[node] = addNode();
            update(L[node], l, mid, ux, uy, val);
        }
        else{
            if(!R[node]) R[node] = addNode();
            update(R[node], mid + 1, r, ux, uy, val);
        }
    }
    int ask(int node, int l, int r, int x1, int x2, int y1, int y2){
        if(r < y1 || y2 < l) return 0;
        if(y1 <= l && r <= y2) return tree[node].ask(0, 0, MAXVAL, x1, x2);
        
        int ans = 0;
        int mid = (l + r) / 2;
        if(L[node]) ans += ask(L[node], l, mid, x1, x2, y1, y2);
        if(R[node]) ans += ask(R[node], mid + 1, r, x1, x2, y1, y2);
        return ans;
    }
};


bool comp1(pii p1, pii p2){
    return (p1.first + p1.second) < (p2.first + p2.second);
}

bool comp2(array<int, 4>& a1, array<int, 4>& a2){
    return a1[2] < a2[2];
}

int main(){
    SegTree2D tree;
    int n, q; cin >> n >> q;
    vector<pii> scores(n);
    for (int i = 0; i < n; i++)
    {
        cin >> scores[i].first >> scores[i].second;
        tree.update(0, 0, MAXVAL, scores[i].first, scores[i].second, 1);
    }
    sort(scores.begin(), scores.end(), comp1);
    vector<array<int, 4>> querries(q);
    for (int i = 0; i < q; i++)
    {
        cin >> querries[i][0] >> querries[i][1] >> querries[i][2];
        querries[i][3] = i;
    }
    sort(querries.begin(), querries.end(), comp2);

    int ans[q];
    int last = 0;
    for (int i = 0; i < q; i++)
    {
        int l = 0, r = n - 1;
        int low = 0;
        while(l <= r){
            int mid = (l + r) / 2;
            if(scores[mid].first + scores[mid].second < querries[i][2]){
                l = mid + 1;
                low = mid + 1;
            }
            else{
                r = mid - 1;
            }
        }
        while(last < low){
            tree.update(0, 0, MAXVAL, scores[last].first, scores[last].second, -1);
            last++;
        }
        ans[querries[i][3]] = n - last;
        if(querries[i][0] != 0){
            ans[querries[i][3]] -= tree.ask(0, 0, MAXVAL, 0, querries[i][0] - 1, 0, MAXVAL);
        }
        if(querries[i][1] != 0){
            ans[querries[i][3]] -= tree.ask(0, 0, MAXVAL, 0, MAXVAL, 0, querries[i][1] - 1);
        }
        if(querries[i][1] != 0 && querries[i][2] != 0){
            ans[querries[i][3]] += tree.ask(0, 0, MAXVAL, 0, querries[i][0] - 1, 0, querries[i][1] - 1);
        }
    }
    for (int i = 0; i < q; i++)
    {
        cout << ans[i] << '\n';
    }
    
}

Subtask #1
0 / 2.0

# Verdict Execution time Memory Grader output
1 Correct 480 ms 540564 KB Output is correct
2 Correct 520 ms 540432 KB Output is correct
3 Correct 451 ms 540444 KB Output is correct
4 Correct 455 ms 540408 KB Output is correct
5 Correct 522 ms 540416 KB Output is correct
6 Correct 466 ms 540548 KB Output is correct
7 Correct 681 ms 573340 KB Output is correct
8 Correct 674 ms 573380 KB Output is correct
9 Correct 682 ms 573460 KB Output is correct
10 Correct 665 ms 564040 KB Output is correct
11 Correct 642 ms 561184 KB Output is correct
12 Incorrect 490 ms 540492 KB Output isn't correct
13 Halted 0 ms 0 KB -

Subtask #2
0 / 20.0

# Verdict Execution time Memory Grader output
1 Execution timed out 3076 ms 848712 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #3
0 / 21.0

# Verdict Execution time Memory Grader output
1 Execution timed out 3076 ms 848712 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #4
0 / 57.0

# Verdict Execution time Memory Grader output
1 Correct 480 ms 540564 KB Output is correct
2 Correct 520 ms 540432 KB Output is correct
3 Correct 451 ms 540444 KB Output is correct
4 Correct 455 ms 540408 KB Output is correct
5 Correct 522 ms 540416 KB Output is correct
6 Correct 466 ms 540548 KB Output is correct
7 Correct 681 ms 573340 KB Output is correct
8 Correct 674 ms 573380 KB Output is correct
9 Correct 682 ms 573460 KB Output is correct
10 Correct 665 ms 564040 KB Output is correct
11 Correct 642 ms 561184 KB Output is correct
12 Incorrect 490 ms 540492 KB Output isn't correct
13 Halted 0 ms 0 KB -